389339980 has 24 divisors (see below), whose sum is σ = 823107600. Its totient is φ = 154689600.

The previous prime is 389339953. The next prime is 389339981. The reversal of 389339980 is 89933983.

It is not an unprimeable number, because it can be changed into a prime (389339981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62346 + ... + 68305.

It is an arithmetic number, because the mean of its divisors is an integer number (34296150).

Almost surely, 2^389339980 is an apocalyptic number.

It is an amenable number.

389339980 is an abundant number, since it is smaller than the sum of its proper divisors (433767620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389339980 is a wasteful number, since it uses less digits than its factorization.

389339980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130809 (or 130807 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 389339980 is about 19731.6998760877. The cubic root of 389339980 is about 730.2019707618.

The spelling of 389339980 in words is "three hundred eighty-nine million, three hundred thirty-nine thousand, nine hundred eighty".